Universal oil pump



Sept. 2, 1924.

- s. E. CROSS UNIVERSAL on. rum

Filed Aug. 14, 1923 I L r V I. W I M Patented ept. 2, 1924.

omen STATES MTENT OFFICE.

SHERMAN E. CROSS, OF SEATTLE, WASHINGTON, ASSIGNOR TO UNIVERSAL AUTO- MOTIVE CORPORATION OF SEATTLE, OF SEATTLE, WASHINGTON.

UNIVERSAL OIL PUMP.

Application filed August 14, 1923.

To all whom it may concern:

Be it known that I, SHERMAN E. CRoss, acitizen of the United States, residing at Seattle, county of King, and State of ashington, have invented a new and useful Universal Oil Pump; and I do hereby declare that the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention is the providing of a simple, efficient and inexpensive means for taking the oil from the bottom of the engine housing or crank case and delivering it to the forward end of the crank case below the front bearing.

The object of the invention is to convey the oil from the bottom of the crank case to the forward end by a simple and inexpensive method.

Another object of the invention is to provide a pump that may be installed in the system, that may be operated by a collar on one of the cam shafts.

And a further object of the invention is to provide a plug with a screen in its upper end and an opening in its side through which oil may be drawn, which may be inserted between the plug and the bottom of the crank case and in the boss into which the plug is screwed.

With these ends in View the invention embodies a plug having a cylindrical section with a screen in its upper end that will pros ject up into the crank case, threads on its exterior by which it may be screwed into the opening in the bottom of the crank case, other threads on the inside of the lower end,

and an opening in its side; a tube extend.

ing from the opening to the end of a pump cylinder, with a check valve in it, another tube also having a check valve in it, extending from the pump cylinder to a point in the crank case below the main bearing, a cylinder valve cover having a boss in it, into which the pump cylinder may be screwed, a plunger with a spring behind it and a roller in its outer end projecting from the inner end of the pump cylinder, and a tapering sleeve that may be placed on the valve stem, which will engage the roller in the end of the plunger.

Other features and advantages of the invention will appear from the following de- ,8 at the upper end.

Serial No. 657,408.

scription taken in connection with the drawings, wherein Figure 1 is a part side view of the engine, showing the location of the device.

Figure 2 is a cross section through the pump and plug.

In the drawings I have shown my device as it would be constructed wherein numeral 1 indicates the pump, numeral 2 the plug, and numeral 3 the tube through which the oil passes.

The cylinder 1 is made of apiece of tub ing 4 with threads on each end, and with a head 5 screwed on the threads at one end. The head 5 has a longitudinal hole 6 in its center which connects the interior of the cylinder with a vertical opening 7 having threaded recesses 8 and 9 in each end and a valve seat 10 at the bottom of the recess A section 11 of the tube 3 is screwed into the upper end and on the interior of the tube is an opening 12 in which a ball 13, which seats upon the valve seat 10 is free to move upward and downward. The tube may have slots 14 cut through it to bypass the ball when it is in the upward position and a pin 15 may be placed through the tube to check the upward movement of the ball.

A uni0n'1 6, which has an opening 17 in its end, and a valve seat 18 in the bottom of the opening may be screwed into the recess 9 at the lower end of the hole. A ball 19 is placed in the opening 17 and rests upon the seat 18 to close the opening. A pin 20 may be placed through the tube above the ball to check the upward movement and slots 21 may be cut through the sides of the tube to form a bypass. The lower section of the tube 3 may be connected to the union 16 by a nut 22, and the lower end of this section may be connected to the lowest point of. the crank case. by placing the plug 2 in the drain plug hole and connecting the tube 3 to it by a sleeve 23 and a nut 24.

The plug 2 may be constructed as shown with a sleeve 25extending upward, which has a screen 26 in its upper end and threads 27 around its lower end, which fit the threads in. the drain plug hole. Below the threads is an enlarged portion 28, which has an opening 29 in one side into which the sleeve 23 is screwed and threads 30 on its interior into which the drain plug may be screwed. It will be seen that the drain plug may be removed, the plug 2 screwed into the same hole and then the drain plug replaced in the outer end of the plug 2.

On the interior of the cylinder l is a plunger 3i which has rings 32 around its inner end, a longitudinal slot 38 extending inward from its outer end, and ears 34k projecting outward from its outer end between which a roller 35 is pivotally mounted on a pin 36. A spring 37 is placed inside of the cylinder and plunger to hold the plunger outward and a set screw 38 is placed through the cylinder wall so that it will project into the slot 33 and prevent the plunger from turning. A tapering sleeve 39 may be placed on one of the cam rods. which will form a seat for the spring on the ram rod, and this sleeve may be held in place by a pin 40. It will be seen that as the cam rod moves upward, this sleeve bearing against. the roller 35 will move the plunger inward, which will force oil in the cylinder upward through the valve formed by the ball 13 and through the section ll and other tube 3. The opposite end of this tube may be connected to the lower side of the crank case through a plug ll in any suitable manner.

It will be understood that changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the design of the pump housing, another may be in the location of the point at which the forward end of the tube 3 is connected to the cranl case, and still another may be in the means for connecting either end of the tube to the crank case.

The construction will be readily understood from the foregoing description. To use the device the sleeve 39 may be attached to one of the valve stems as hereinbefore described, the cylinder I screwed into aboss L2 that may have been placed in the cylinder valve cover and the tube 3 may be connected to the bottom of the crank case as hereinbefore described. It will be seen that as the valve stem moves upward and downward the plunger will move inward and outward and pump the oil from the plug 2 to the plug ll.

Having thus fully described the invention what I claim as new and desire to secure by Letters Patent, is

1. A means for conveying oil from the bottom of the crank case at the rear to the forward end, embodying an auxiliary plug that will project up into the crank case, and that will fit the threads of the oil drain plug, said plug having a screen in its upper end, an opening in its side into which a tube may be screwed, and threads in its lower end into which the oil drain plug may be screwed; a pump, to which a tube extending from the plug may be attached, said pump having a cylinder that may be attached to a boss which is placed on the cylinder valve cover, a plunger with a roller pivotally mounted between ears on its outer end, a spring for holding it outward, and a longitudinal slot into which a set screw in the cylinder projects; a tapering sleeve to engage a roller in the end of the plunger which may be placed on the valve stem to replace the sleeve that forms a seat for the spring on the valve stem; and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, also having a check valve in it at the pump end.

2. ill means for conveying oil from the bottom of the crank case at the rear to the forward end, embodying an auxiliary plug that will project up into the crank case, and that will fit the threads of the oil drain plug, said plug having a screen in its upper end, an opening in its side into which a tube may be screwed, and threads in its lower end into which the oil drain plug may be screwed; a pump to which a tube extending from the plug may be attached, said pump being attached to a boss that may be placed on a cylinder valve cover, anc having a plunger that is operated by a tapering sleeve that may be placed on one of the valve stems; and suitable pipes for connect ing the plug in the oil drain plug hole to the pump, and the pump to the forward end of the crank case.

3. A means for conveying oil from the bottom of thecrank case at the rear to the forward end, embodying a pump having a cylinder that is screwed into a boss which may be placed on the cylinder valve cover, a plunger in the cylinder having a roller in its outer end, a resilient means for holding it outward, and a means for preventing the plunger from rotating; a tapering sleeve that may be placed on the valve stem opposite the point at which the cylinder is inserted, which sleeve will replace the spring seat and engage the roller in the end of the plunger; and suitable tubes for connecting the pump to the bottom of the crank case at the rear and to a point at the forward end of the crank case, said tubes having check valves at their pump ends, and the said tube which connects the pump to the crank case at the rear having a special casing with a screen in its upper end that may be placed in the oil drain plug hole.

SHERMAN E. CROSS. 

